Method of manufacturing lined or enveloped tubes of parchment-paper.



No. 809,846 PATENTED JAN. 9, 1906. G. H. SAOHSENRUDER. METHUD OFMANFAGTURING LINED 0R ENVELOPED TUBES 0F PARCHMBNT PAPER.

APPLICATION FILED JAN. 7, 1903.

77277572 for? UTNTTED STATES PATENT. GFFTGE.

GUSTAV HEINRICH SAGHSENRGDER, OF BARMEN, GERMANY.

METHOD OF MANUFACTURING LINED 0R ENVELOPED TUBES OF PARCHMENT-PAPER.

Specification of Letters Patent.

Patented Jan. 9, 1906.

Application filed January '7, 1903. Serial No. 138,152.

To all, IU/Lrflib it may concern/.-

Be it known that I, GUSTAV HEINRICH SAorrsENRoDER, a subject of theGerman Emperor, residing at Barmen, Unterbarmen, in the Province ofRenish Prussia, in the Kingdom of Prussia, German Empire, have inventednew and useful Improvements in Methods of Manufacturing Lined or Enveloped Tubes of Parchment-Paper, of which the following is aspecification.

My said invention relates to a process of producing such tubes as aremade by folding together the edges of a strip or width ofparchment-paper by providing them during the formation with a lining orsimultaneously therewith with an outer covering or envelop in order tostrengthen the tube or impart to it a better or peculiar appearance.l/Vhen making tubes of parchment-paper, the lining or envelop givessupport to the soft and weak paper, while the parchmentizing isproceeding and prevents it tearing while being formed into a tube.

According to my said invention a strip of convenient length and suitablewidth of raw material for the parchment-paper is passed through theusual well-known parchmentizing liquid, so as to become parchmentizedand adhesive, and is then united by pressure to another strip of thematerial intended for the lining. The compound strip so produced is thenturned up to form a tube in such a way that the lining side comes to theinterior and the two edges of the strip overlap to the extent desired toform a joint. The overlap ping edges are then pressed together, andafter thorough drying the tube so obtained is cut to lengths. Theresulting tube must then be subjected to a water-bath to tenninate theparchmentizing and to remove the whole of the parchmentizing liquid fromthe tube. The simultaneous application of an outer envelop is effectedby applying a strip on both sides of the strip after passing through theparchmentizing liquid, so that one of these applied strips forms thelining and the other the outer envelop of the tube eventually formed inthe manner described.

In the drawings, Figure 1 represents diagrammatically in side elevationan arrange ment adapted to carry the invention into effect. Fig. 2 is aside elevation of a modification of the arrangement for applyingsimultaneously a lining and an outer envelop. Figs. 3, 4, and 5 show thetube'formers detached. Fig. 6 is a section of a formed but deredadhesive.

unclosed tube having a lining. Fig. 7 is a section of a Formed butunclosed tube provided with a lining and an outer envelop.

The strip of paper from which the lined or enveloped tube is to beformed is convenicn tly drawn from a roll a, thence through a trough 6,containing parchmentizing liquid. A guide or dip roller 0, under whichthe strip passes, is mounted in the trough. Doctors brushes or the likedevices are provided to remove the superfluous liquid as it leaves thetrough, whence it passes between pressingrollers (Z f. Along with thestrip from the roll a the lining-strip from the roll g passes betweenthe pressingerollers. Sullicient pressure or nip is applied by thepressing-rollers to firmly unite the two separate strips into a singlecompound strip 8, which traveling in. the direction of the arrows goesthrough an oval guide or former I, where the edges are turned up, thenthrough the former II, which more nearly approaching the form of acircle bends the edges closer together. The stri then goes through theformer III, whic 1 causes the edges to overlap. Figs. 3, 4, and 5 showthe formers in front elevation. The strip 8 has now been bent to theshape shown in cross-section in Fig. 6, in which state it goes through apair of pressing rollers i 'm, where sul'licient pressure is applied tounite the overlapping edges. As the tube leaves the press-rollers i m itis cut into convenient lengths. hen the strip of raw material suitablefor parchmentizing is drawn from the roll a and through theparchmentizing liquid in trough b, the parehmentizing process is startedand the strip is thereby ren- It then passes throughthe pressmg-rollers(Z f along with the lining-strip from the roll 9 and, it required, withan envelop-strip from the roll 9. The pressingrollers unite the stripstogether. The compound strip is formed into a tube, and the overlappingedges are pressed together by the pressing-rollers i m in the manneralready described. In order to remove the parchmentizing liquid from thetube and to co1nplete the parchmentizing, the tube is led from thepressing-rollers to a water-trough h.

To produce a tube with a lining and an outer envelop, the latter, asshown in Fig. 2, is drawn upward from the roll g and passes between thepressing-rollers under the strip coming from the roll (L through theparchmentizing liquid. At the same time the strip to form the liningcomes from the roll g. A

triple compound strips is thus produced, from which the tube is formedand treated in the manner already described. In the case of a tubehaving a lining and an envelop the edges of the respective strips areset in such a relation to each other (see Fig. 7) that the parchmentmaterial at the edges (1 effects the union of the overlapping portions.

Should it be desired not to press the tubes flat in the press-rollers im, but to preserve them in a perfectly round form when they leave thepress-rollers i m or enter the watertrough h, the strip 8 is led over around mandrel extending from the former I through the formers II and IIIand into the pressing-rollers i m. The flattened tubes may, however, betransformed into round ones by the application of internal pressure. Bythe choice of suitable lining or enveloping fabrics tubes possessing aconsiderablepower of resistance to liquid or gas pressure may beobtained. These formers I II III are fixed or spaced a suitable distanceapart, so that the strip is gradually bent to tubeform, and nostraining, tearing, or breaking of fiber is liable to result.

Having now particularly described and ascertained the nature of my saidinvention and in what manner the same is to be performed, I declare thatwhat I claim is A method of manufacturing lined or enveloped tubes ofparchment-paper, consisting in passing a strip of paper through aparchment- 1 GUSTAV HEINRICH SAGHSENRGDER.

Witnesses:

OTTO KoNrG, J. A. RITTERSHAUS.

